# Butter Box UI Run locally: `bundle exec jekyll serve` ## Dummy USB UI In addition to running the main UI locally, you can also simulate a USB drive having been inserted. To do so, make a suitable directory tree available at `usb-butter` by running: `cp -r simulated-usb-butter usb-butter` Of course, this is just the UI layer, but it lets you work with the JS and CSS without needing a real box running. You can take this a step further and simulate an fdroid webdash content pack. Use `fdroid-webdash-butter` with a sample app store or the wind-repo. See `App Store.md`